Suction nozzle



1? Apr. 8, 1941 graze 2,237,726 soc'rronnozzrs George Horace Cranmer,Philadelphia, Pa, as-

signer to Elect'rolux Corporation,

New York,

N. Y., a corporation of Delaware Application January ca, 1939, SerialNo. 252,213

8 Claims.

ll/lv invention relates to suction nozzles and more particularly tosuction nozzles for cleaning rugs.

in cleaning rugs there are different conditions to he met depending uponthe type of rug to be cleaned and also the type of dirt to be removed hra suction nozzle.

Dirt embedded in the pile of a rug is most conveniently removed by asuction nozzle having smooth lips and producing a flow of a large volumeof air through the rug pile. In removing surface dirt including hairs,threads, and the hire, it is desirable to produce a high velocity of airiiow along the rug surface. An agitator for separating or looseninghairs, threads, etc. tenaciouslv adhering to the surface of the rug isdesirable especially in the case of high pile rugs, such as Orientalrugs.

an object of my invention is to provide an improved suction nozzle withan agitator for uuiclrlv and efilclently removing surface dirt.

other object of my invention is to provide a suction nozzle with a twoposition agitator with difierent surfaces for cleaning different typesof rugs.

at l consider to be novel and my invention may he better understood byreference to the following specification and appended claims whenconsidered in connection with the accompanning drawing, in which Fig. lis a top plan view of my improved suction nozzle;

Fig. 2 is a side elevation partly in section;

Fig. 3 is an enlarged detail view of the agitator;

Fig. d is an enlarged cross-sectional view taken along the line i-t ofFig. 2 with the nozzle in reversed position and engaging a rug; and

Fig. 5 is a top plan view showing the agitator in an alternate position.

Referring to the drawing it indicates a suction nozzle hotly having atop surface it and a bottom surface it. The bottom surface it isprovided with an elongated suction opening it surrounded hp smooth lipsit. Suction opening it is used for the general cleaning of rugs and iorremoving dirt embedded in the rug pile. The smooth lips l t seal againsta rug surface and so cause air to pass through the rug pile. l orremoving surface dirt, hairs, threads, and the hire, the top surface itis provided with a rod it having a central passage it. Passage itcommunicates with the interior oi the body it and provides a suctionopening smaller than the suction opening it and suhicientlv, small topro duce a high velocity flow of air when connected dill hill

to a vacuum cleaner. Rod i5 is provided with spaced lugs il located ateach side of the passage ii. Lugs I! may be formed by milling the rod 15at right angles to the passage It. The height of the lugs I1 is greatestadjacent the passage ii forming a sharp edge at the passage It. Spacedlugs i8 arelprovided on the reverse side of rod i5 adjacent each side ofthe hassage ii. The lugs ifliare longer, wider, and spaced farther apartthan the lugs ii. The spaces between lugsu-il are curved producingsmooth side edges on the lugs It for a purpose that will be pointed outbelow.

The formation andIIocation of the lugs ii and il are not covered by thisapplication but are the subject of another application filedconcurrently herewith.

The ends of the rod enter recesses it in top part Ii as shown at theleft in Fig. 2. Top ill and rod I! are secured to bottom it by aplurality of screws 22. A finger grip 23 is connected to rod ii forrotating it' from one position presenting lugs i! to a second positionpresenting legs I! and vice versar To hold the red I! in either of itstwo positions the sides of the rod forming the passage II. are bowed outas shown in Fig. 3 though somewhat exaggerated therein. The bowed outsides at the rod it increase the eifective width of the rod transverseto the passage II. when the rod I8 is in either of its selectedpositions the sides or the rod frictionally engage the sidewalls 24 ofthe opening 25 or top it in which thercd it is located. The side walls2d are so spaced as to straighten the sides of rod it when it is in oneoi its operating positions, as shown in Figs. l and 5. he the rod I5 isrotated hr itsflnger grip it from one position to another the frictionalengagement between the rod it and side walls it decreases to a minim enthe passage it is perpendicular to the side walls it and then increasesto a maximum when the rod it reaches its second position. Thislrictional engagement is sumcient when the rod iii is in one oi itsselected positions to hold the rod against accidental rotation byengagement with a surface being cleaned. ddiacent the entremlties oi rodit, two gliding surfaces it entcndnutwarv irom the top suriace ill andserve the dual innctions 9i iacilitat ing the movement oi the noazlealong a rug sur lace and locating either the lugs ill or the lugs it atthe suriace oi the rug. ll pivoted elhow it communicates with theinterior oi the hodv it and man he cocctcd to a men cleaner, not shown,through the intermedia'rvoi a cue tion conduit. When elbow 21 and body40 are in the relative positions shown in Fig. 2, the suction producedby a vacuum cleaner is communicated to the suction opening i3. Byrotating the body In about the elbow 21 through an angle of 180 degreescommunication is established with the passage Hi.

When the nozzle body I is to be used for cleaning a rug it is connectedto a vacuum cleaner as by means of the connection of a suction conduitto elbow 21. The embedded dirt is removed from the rug by traversing itwith the bottom II in contact with the rug surface. When it is desiredto remove surface dirt, hairs, threads, and the like, the nozzle body isrotated on the elbow 21 to a position with the top-surface II in contactwith the rug. With the rod ii in the position shown in Figs. 1 to 3, thelugs l1 engage the rug surface. The end extensions 26 serve to positionthe lugs II at the surface of the rug pile. Air entering the passage l6travels along the surface of the pile and due to the relatively smallcross-sectional area of the passage l6 attains a high velocity. As thenozzle is moved across a rug the high velocity air flow will carry thesurface dirt including the loose hairs, threads, etc. into the passagel6. Hairs, threads, or the like which are adhering tenaciously to thesurface of the rug pile are loosened by the lugs H. The forward edges ofthe lugs I1 adjacent the rear of the passage l6, determined by thedirection of movement of the nozzle, serve to loosen the threads and thelike. The lugs I! on the opposite side of the passage [6 serve to guardthe sharp edges of the other lugs l1 and prevent them from becomingdeeply embedded in the rug pile. Regardless of the direction of movementof the nozzle one set of lugs -I'| serve to loosen the threads and theother set on the opposite side of passage l6 serve as guards for thefirst set. The spaces between the lugs l1 permit a flow of air right atthe surface of the pile from both sides into the passage IS. The passagel6 being of uniform cross-section throughout its extent the velocity ofthe air is maintained in its passage therethrough and there is notendency for dirt picked up by high velocity air being precipitatedagain due to a reduction in the velocity as the air enters the nozzle..An important advantage obtained from the location of the lugs I! on eachside of the central passage I 6 is the equal facility with which surfacedirt may be v removed upon movement of the nozzle, in a forward orreverse direction.

In cleaning hooked rugs which have looped threads at the surface insteadof the free ends of a pile, as do other rugs, there is a. possibilitythat the lugs l1 may catch in the surface threads. The lugs l8 are widerand do not have the sharp side edges of the lugs l1 due to the curvedsurfaces between the lugs l8. The lugs l8 will not catch in loopedsurface threads and so may be used for cleaning hooked rugs. The lugs I8perform the same function as the lugs l1 and if desired may be used forthe surface cleaning of other rugs especially low pile rugs.

What I claim is:

1. 'A suction nozzle comprising a body having an elongated opening, arod secured to said body within said opening having a central diametricpassage with a plurality of radially spaced openings forming a suctionopening and communicating with the interior of the body, means to rotatesaid rod to selectively present one of said openings in cleaningposition, and means engaging opposite sides of said rod to frictionallyhold said rod in a selected cleaning position.

2. A suction nozzle comprising a body having an elongated opening, a rodsecured to said body within said opening having a. central diametricpassage with a plurality of radially spaced openings forming a, suctionopening and communicating with the interior of the body, means to rotatesaid rod to selectively present one of said openings in cleaningposition, said rod being bowed out transversely to the passage throughsaid rod, and abutment means engaging opposite sides of said rod tofrictionally hold the rod in a selected cleaning position.

A suction nozzle comprising a body having an elongated opening, a rodsecured to said body within said opening having a central diametricpassage with a plurality of radially spaced openings forming a suctionopening and communicating with the interior of the body, means forrotating said rod to selectively present one of said openings incleaning position, said rod normally having a greater diameter in aplane perpendicular to the passage through said rod, and abutment meansengaging opposite sides of said rod to frictionally hold the rod in oneor the other of the cleaning positions.

4. A suction nozzle comprising a body having an elongated opening, a rodsecured to said body within said opening having a central diametricpassage with a plurality of radially spaced openings forming a suctionopening and communicating with the interior of the body, a finger gripconnected to said rod and adapted to move the rod .to selectivelypresent one of said openings in cleaning position, said rod beingpreformed with a greater diameter perpendicular to the passage throughsaid rod, and walls formed in said body in each side of said rodengaging said rod to frictionally hold the rod in either of the cleaningpositions 5. A suction nozzle comprising a body having an elongatedopening, a rod secured to said body within said opening having a centraldiametric passage with a plurality of radially spaced openings forming asuction opening and communicating with the interior of the body, meansto rotate" said rod to selectively present one of said openings incleaning position, said rod tending to expand outwardly in a directiontransverse to said passage, and walls formed in said body at each sideof said rod engaging said rod to overcome the tendency of the rod toexpand, whereby a frictional engagement is produced between said rod andsaid body opposing rotation [of said rod from one or another cleaningposiion.

6. A suction nozzle including a bottom part, a top part with recessesadjacent the ends of a central elongated opening, said recesses openinginwardly toward said central opening and toward said bottom part, a rodsecured within the opening of said top having a. central passage forminga suction opening with ends extending into the recesses in said top andabutting said said bottom part, and means securing said top and bottompart together whereby said rod is locked in position.

'7. A suction nozzle including an hollow bottom part having a sideopening. a top part having a central opening, and end recesses openinginwardly toward said central opening and toward said bottom part, a rodhaving a central diametric passage communicating with the interior ofsaid bottom part and extending into said end we cessesi oi seici toppart and abutting the bottom part, a, tubular member extending throughthe* sine opening of said bottom part, and means to secure said top partto said bottom part.

B. A suction nozzle including a bottom part having a, side opening, atop part having a, centrail opening and end recesses opening inwardlytoward said. central opening and toward; said b t-tom part, a rodlocated within the central 10 nne'men opening oi nniei ton nnit with itsends extending into sniii ensen nnn abutting min bottom part, snid i'oiiinn/inn n nenti'nl iiinmeti'in tines-nee forming [EL suction openinneommnnie'nting with the interior oisnin bottom pni't, nn eihow extendingthrough the side nneninn oi sniti iiottom part, and screws eiitenninnthinnnh mid bottom part anti in tin'eniien ennenient with said top part,

